Immunogenic Mycobacterium africanum Strains Associated with Ongoing Transmission in The Gambia oleh Florian Gehre, Martin Antonio, Jacob K. Otu, Neneh Sallah, Oumie Secka, Tutty Faal, Patrick Owiafe, Jayne S. Sutherland, Ifedayo M. Adetifa, Martin O. Ota, Beate Kampmann, Tumani Corrah, Bouke C. de Jong